m Score: 08 of 1 pt ??7.1.13. , of 1 5 (15 complete) ? HW Score: 95 4496, 18 13
ID: 2949712 • Letter: M
Question
m Score: 08 of 1 pt ??7.1.13. , of 1 5 (15 complete) ? HW Score: 95 4496, 18 13 of 19 pts Use the sample data and confidence level given below to complete parts (a) through (d) A research nsti te poll asked respondents f they felt vulnerable to identy theft n the poll n-1092 and x 82 who said yes Use a 90% confidence k vel. nat BB Click the icon to view a table of z scores a) Find the best point estimate of the population proportion p. 1) (Round to three decimal places as needed) 1) 1) 1) Enter your answer in the answer box and then click Check Answer All hat to s ! Not for this site Yes Would you like to store your password for pearsoned.com? Why am I secing this?Explanation / Answer
(a) Best point estimate = p^ = 582/1092 = 0.533
(b) 90% confidence interval = p^ +- Z90% sqrt [p^ * (1 - p^)/n]
= 0.533 +- 1.645 * sqrt [0.533 * (1 - 0.533)/1092]
= 0.533 +- 0.025
= (0.508, 0.558)
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